Furnace.



W. N FURTHIVIANN.

FURNACE.

APPUcAnoN FILEDJULY30,1913.

Patenten?. Apr. 13, 1915 2 SHEETS-SHEET l.

AXA/[III m w w W W. N. FURTHMANN.

FURNACE. APPLICATION FiLED JULY 30,19l3.

Patented Apr. 13, 1915.

2 SHEETS-SHEET 2v mmm tti

Ell

titl

. i Nalini x iwi dlddlllhil mlm.

FUR-NACE.

Specification of Letters Patent.

Patented Apr. lid. della.

Application 'iled .Tuly 30, 1913. Serial No. 752,009.

To ull 1r/Qur fit may concern:

Be it hnovvn that l, WILLIAM. hl. FURTH- 'nasvg citizen of the UnitedStates, residing at Uhicagmin the countyof Cool: and State ol? illinois,have invented a certain new and 'oo lul llnproven'ient in Furnaces7 olfwhich 'the following is a full, clear, concise, and enact description.

My invention relates to improvements in heating appliances. l l

lhe objects ol' my invention are to provide a device of this characterof increased ehliciency; to provide au improved arrangement lor insuringcontinued circulation of the air to he heated. through theheatingchalutiers; to provide improved means or insuring a continuoussupply of fresh air to the. heating chambers; to provide means tor supplying heated air to the combustion chalnher; and to provide a devicewhich is simple7 durable and which requires little attention.

have illustrated, in the accompan ing drawings, the preferredenihodinient oV the invention. .llt 1s to be understood, however, thatsaid invention may he embodied in other terms.

ln the drawings, Figure l is a sectional elevation of the preferredstructure; Fig. 2 is an. enlarged, top, plan view of the adjustable drippan; lli r. 3 is a bottom plan view of the combined leector and cover;Fig. 4i: is an enlarged bottom plan view of the hui-ner cap; Fig. 5 isan enlarged. top plan view of the burner with the cap removed; Fig. t3is an enlarged, sectional elevation of the leed tube; i is an enlarged.top plan view of; the overflow cup; and Fig. S is a perspective view cia support.

.lfhe device comprises a burner l of suitahle construction. hereinafterdescribed more fully, said burner being located at the hase oit acombustion chamber 2, the latter being supported on suitable standardsor legs rthe heated products olf combustion pass upwardly through thechamber and out through. a suitable pipe or outlet fl. llithin theclmiubei' Q an inner chamber 5 is located. the latter being spaced fromthe former and suppe d on suitable standards or brackets G., 'u'l'le ohya free spacegis prolidcd around all sides of said inner chamber, thelatter heilig; thereby subjected to the above men tioned heated gases asthey pass upwardly Fresh air is admitted to from the burner.

the inner chamber 5 through a suitable pipe 7. rThe apparatus asillustrated is shown mounted in an inclosure 8, as, for example, a rooinof: a house7 the chamber.' 5 having open communication, therewith,whereby the heated air 4itrom said chamber passes directly into saidinclosure 8 and circulates in the manner lindicated. by the arrows.However, 'it is to he understood that the device may he used as a'furnace `and located in the basement of a building in the usual manner,under which circumstances the heating chamber would communicate with.the usual pipes leadingl to the upper doors. ln the arrangement shown,wherein it is intended to maintain a certain predetermined temperaturewithin a given iuclosure, the inlet pipe 7 extends preferably throilghthe wall of said inclosure whereby fresh air is drawn in 'from theoutside. The products of combustion also pass out of said inclo surethrough the pipe --l.

The burner l, previously referred to. is preferably an oil burner.liquid uelheiug supplied through tlfe pipe 9 and the How there ofcont-rolled by a suitable valve having a housing 1G and a plunger ilinthe form of a needle valve, the latter having a small opening therein(see dotted lines in Fig. l) whereby there is a continuous, althoughlimited, iow of oil through the valve even wher. the plunger is seated.Said plunger is car ried on a pivotcd lever l2, movement being .impartedto the latter by a suitable thermo static expansion device 12 havingthin ilexible walls, the detailed construction of which device is wellknown. The movement of the lever is limited hv a suitable adjustingdevice 1.4 which limitsl the. upper movement of the lett hand end ofsaid lever as shown in Fig. `l. The thermostatic device controls thevalve in such`a manner as to vary the fuel supply and thereby maintain adeiinite predetermined temperature in a manner which will he more fullydescribed hereinaft-er.

rllhe oil or other fluid. after passing' the valve just described.accumulates iu a rcccp tacle 15 having; glass walls lll wherehvY thelevel ot' the fluid may he observed. A pipe 17 leads from saidreceptacle und connects with a suitable coupling; 18 (see Fig. 6). Saidcoupling.' has screw threaded engage ment with a. tube lSl. the latterhavingv a` plurality ol radial openings Q0 at its upper end mettere butbeing closed at the top. Aniiner adnormally above said holes. To aid iniuinstable tube 21 is also carried by said bush- Specting the burner andalso in cleaning the ingvl8and is provided at its lower end with device,the bottom 320i the inner cliainber a funnel shaped extension 22provided with 5 is made removable in an upwardly circo a suitable screen23 preferably of gain-Zea through which the air is.s c1 eened,

l tion, being provided with a which l suitable ringl or eyelet 33, Wh

ereby a rod Twith a hook' on the passes upwardly through the inner tubeto end may be lowered through the chcinbor the burner The oil whichentersthrough and said bottom raised thereby, exposing the pipe 17 illsthe tube 19 and,A flowing out the burner and its associated parts toView 1c through the'openings 20', partially lls the and rendering theniaccessible for cleaning cone-shaped recess in the burner 1. Thepurposes. Said bottom comprises a. pair ot thrown downwardly, a featurethat is of level of the liquid fuel in said recess is the same as thatin the receptacle 15. Said fuel, upon being ignited, furnishes thenecessary air or other medium in the disks 34, 35 held apart by :ipedestal 3G. The lower disk acts as a delector, as shown by the arrows.

It will be seen. that there iS-iio direct conimunicatioii between thepassages through which the burnt products of combustion are drawn andthe air within the inclosures 8 which it is desired to heat. Accordinglysaid air is not contaminated. The fresh air is drawn in through theouter walls of said inclosure and passing directly into the hentingchamber 5 iiear the lower end thereof, it passes upwardly about asindicated by the arrows and by virtue of the central enlarge ment ofsaid heatingl chamber, ample heat is such that air is supplied totheburner ading area is provided to heat said air the dejacent to theliquid fuel through the opensired amount. The heated air passing out inglin the burner cap 26 and also through th area ofthe of because of thecone-shaped recess or receptacle. Accordingly the flame may be edjustedby adjusting said level by the operation of thev inlet valve.

` he burner l includes a suitable frame or spider 24, the lattercarrying also a cylindrical element 25 having a cap 26 with anei'ilarged central opening. vThe construction vwill be readilyunderstood from Fig. 1 and the tube 21. A further supply of air is adcuates within the i'nclosure about as shown inittedaround the cylindricalelement 25. by the arrows, and part ot it is oiawn imo If the fuel levelin the burner becomes so the burner to supply the necessary orygjgen.

high that the oil overflows, said oil is caught he air Supplied to theburner accordingly and restrained by a circular Harige 27 at the isheated air. IThe air discharged into the in :f base of the burner l. Ifthe oil overflows `closure is heated not only from having been saidflange, it is caught Within a shallow pan within .the chamber but alsoby beingl 28 adjustably supported on the screw threadbrought in directcontact with the walls 2 of ed tube 19. Said pan, by being adjusted upthe outer inclosure of the heater. recordor down, acts as a damper tovary the air ingly very little heat Wasted. The thersupplied to theburner and also acts as a Shad niostatic device 13 responds to thetempera.` the light ture of the heu-ted air and by varying the fuelsupply, maintains said air at the desired predetermined temperature.

e to prevent from being considerable importance in certain classes oservice I l iat I claim is: i The pan 28 is provided with a plurality na heating device, a cylindrical chamber o f holes 29 through which theaccumulated open at the top, and having a centi-al enlargement, and aremovable bottoni compris` ing a pair of disks spaced apart by a centralpedestal, one of said disks acting as a heat deiector. i

In wit-ness whereof, iny naine this 26th day d being provided with a dthrough Which the overflow oil may be rel, hereunto subscribe or"July'.y A. D. 1913. FUlt'il-ilvljlilil'.

W'ILLIAM N. l. itnesses:

MCCLELLAN YOUNG., Grenen E. FOLK.

